<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>JavaScript 对象-创建 JavaScript 对象</title>
</head>

<body>
    <script>
        var person = new Object();
        person.firstname = "John";
        person.lastname = "Doe";
        person.age = 50;
        person.eyecolor = "blue";
        document.write(person.firstname + " is " + person.age + " years old.");
    </script>
</body>

</html>